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This classic star trail image was obtained with a digital camera using the technique described in the March 2004 Sky and Telescope magazine. Over 150 individual one-minute digital images were stacked in Photoshop to create this image. A first-quarter moon illuminated the surrounding landscape for the duration of the exposures.
Mauna Kea is a dormant volcano on the island of Hawaii.Image credit: Gemini Observatory/AURA
